Why is it that vowing to eat better so often feels like biting off more than you can chew? In her latest book, The Lean, wellness expert Kathy Freston presents a 30-day plan for "leaning" into good health—gradually and gently. Here, a few toe-in-the-water tips that are too easy not to follow.

Cinnamon

Work two tablespoons of vinegar or a heaping teaspoon of cinnamon into your recipes. These two ingredients have been shown to increase insulin sensitivity and keep blood sugar levels steady—which could help prevent postmeal pangs.